If there's one thing that vintage sucks at compared to modern technology, it's lighting.
LED lights and engineered optics run circles around old incandescent lights. Generators that runoff of a tire are so much less efficient than even a lowly Sanyo hub generator.
USB rechargable lithium ion batteries get better and cheaper every year.
The only thing going for old lighting systems is that they look vintage.
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If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.